Next Article in Journal
Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil
Next Article in Special Issue
Effect of Gold Electronic State on the Catalytic Performance of Nano Gold Catalysts in n-Octanol Oxidation
Previous Article in Journal
Bone Diseases: Current Approach and Future Perspectives in Drug Delivery Systems for Bone Targeted Therapeutics
Previous Article in Special Issue
Investigation on Mn3O4 Coated Ru Nanoparticles for Partial Hydrogenation of Benzene towards Cyclohexene Production Using ZnSO4, MnSO4 and FeSO4 as Reaction Additives
Open AccessArticle

Fitting Biochars and Activated Carbons from Residues of the Olive Oil Industry as Supports of Fe- Catalysts for the Heterogeneous Fenton-Like Treatment of Simulated Olive Mill Wastewater

1
LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
2
Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva, 18071 Granada, Spain
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(5), 876; https://doi.org/10.3390/nano10050876
Received: 9 March 2020 / Revised: 14 April 2020 / Accepted: 17 April 2020 / Published: 1 May 2020
(This article belongs to the Special Issue Catalysis by Metal-Oxide Nanostructures)
A series of biochars and activated carbons (ACs) was prepared combining carbonization and physical or chemical activation of cheap and abundant residues of the olive oil industry. These materials were used as Fe-support to develop low-cost catalysts for the heterogeneous Fenton-like oxidation of simulated olive mill wastewater (OMW), the highly pollutant effluent generated by this agroindustry. Commercial ACs were also used as reference. All catalysts prepared were extensively characterized and results related with their performances in the catalytic wet peroxide oxidation (CWPO). Results showed a linear relationship of the textural properties of the catalysts with the adsorptive and catalytic performance, as well as the preferential adsorption and degradation of some phenolic compounds (caffeic and gallic acids) by specific interactions with the catalysts’ surface. Despite the best performance of catalysts developed using commercial supports, those prepared from agro-industrial residues present some advantages, including a smaller catalyst deactivation by iron leaching. CWPO results show that catalysts from physically activated olive stones are the most promising materials, reaching total organic carbon and toxicity reductions of 35% and 60%, respectively, as well an efficient use of H2O2, comparable with those obtained using commercial supports. This approach showed that the optimized treatment of this type of residues will allow their integration in the circular economic process of the olive oil production. View Full-Text
Keywords: agricultural residues; biochars; activated carbons; Fe-carbon catalysts; CWPO; olive mill wastewater; Fenton agricultural residues; biochars; activated carbons; Fe-carbon catalysts; CWPO; olive mill wastewater; Fenton
Show Figures

Graphical abstract

MDPI and ACS Style

Esteves, B.M.; Morales-Torres, S.; Maldonado-Hódar, F.J.; Madeira, L.M. Fitting Biochars and Activated Carbons from Residues of the Olive Oil Industry as Supports of Fe- Catalysts for the Heterogeneous Fenton-Like Treatment of Simulated Olive Mill Wastewater. Nanomaterials 2020, 10, 876. https://doi.org/10.3390/nano10050876

AMA Style

Esteves BM, Morales-Torres S, Maldonado-Hódar FJ, Madeira LM. Fitting Biochars and Activated Carbons from Residues of the Olive Oil Industry as Supports of Fe- Catalysts for the Heterogeneous Fenton-Like Treatment of Simulated Olive Mill Wastewater. Nanomaterials. 2020; 10(5):876. https://doi.org/10.3390/nano10050876

Chicago/Turabian Style

Esteves, Bruno M.; Morales-Torres, Sergio; Maldonado-Hódar, Francisco J.; Madeira, Luis M. 2020. "Fitting Biochars and Activated Carbons from Residues of the Olive Oil Industry as Supports of Fe- Catalysts for the Heterogeneous Fenton-Like Treatment of Simulated Olive Mill Wastewater" Nanomaterials 10, no. 5: 876. https://doi.org/10.3390/nano10050876

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop